Roberto is training for a running test. Each day Roberto managed to perform more repetitions than the day before.
- On the second day he did 2 more repetitions than the first day.
- On the third day he did 3 more repetitions than on the second day.
- On the fourth day he did 5 more repetitions than on the third day.
- How many repetitions did Roni do in the four days together, if on the first day he performed 3 runs?
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Roberto is training for a running test. Each day Roberto managed to perform more repetitions than the day before.
- On the second day he did 2 more repetitions than the first day.
- On the third day he did 3 more repetitions than on the second day.
- On the fourth day he did 5 more repetitions than on the third day.
- How many repetitions did Roni do in the four days together, if on the first day he performed 3 runs?
To solve this problem, let's determine how many runs Roberto did on each day and then sum those amounts.
Starting with the given conditions:
On the first day, Roberto performs runs.
On the second day, Roberto performs runs (2 more than on the first day).
On the third day, Roberto performs runs (3 more than on the second day).
On the fourth day, Roberto performs runs (5 more than on the third day).
Now, let's sum up the runs from all four days:
Therefore, Roberto did a total of 29 runs over the four days.
The correct answer is: 29 runs.
29 runs
Solve for X:
\( 3x=18 \)
Always add the daily totals! The increments (2, 3, 5) just tell you how much more Roberto did each day. Calculate what he actually did each day: Day 1 = 3, Day 2 = 5, Day 3 = 8, Day 4 = 13, then add these.
Because that's mixing starting amounts with increases! The 2, 3, and 5 are additions to previous days, not standalone amounts. You need to build up each day's total step by step.
Make a simple table: Day 1: 3, Day 2: 3+2=5, Day 3: 5+3=8, Day 4: 8+5=13. This way you see exactly what Roberto did each day.
Take it one day at a time! Start with Day 1 (given as 3), then calculate Day 2 by adding the increase. Use your Day 2 answer to calculate Day 3, and so on. Work step by step!
Add up your four daily totals and see if you get 29. Also, make sure each day's total makes sense: Day 2 should be 2 more than Day 1, Day 3 should be 3 more than Day 2, etc.
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